Bug 6087 - mtouch --launchsim should support more simulator options
Summary: mtouch --launchsim should support more simulator options
Alias: None
Product: iOS
Classification: Xamarin
Component: Tools ()
Version: 5.2
Hardware: PC Mac OS
: --- normal
Target Milestone: Untriaged
Assignee: Sebastien Pouliot
Depends on:
Reported: 2012-07-11 20:23 UTC by adam.lickel
Modified: 2013-02-14 13:14 UTC (History)
2 users (show)

Is this bug a regression?: ---
Last known good build:

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Description adam.lickel 2012-07-11 20:23:33 UTC
Currently, the only option I can see is `--device` which is poorly documented.

--device should support retina versions of the iPhone and iPad simulators, and the enumeration should be available in `mtouch -h`

There should also be a way to specify the OS version of the simulator.

This is especially relevant as --stdout and --stderr will not apply once the app has quit (as when you switch these parameters in the simulator's drop down menu.
Comment 1 Sebastien Pouliot 2012-07-16 08:38:17 UTC
If you directly use the `mtouch` command-line tool then your best reference is it's man page, which is available online at:


This is much better than `mtouch -h` but feel free to comment on it if some options are not documented enough to be useful.

> Currently, the only option I can see is `--device` which is poorly documented.

    Specify the type of device you want the iOS simulator to simulate. Use 1 for the iPhone, 2 for the iPad.

> --device should support retina versions of the iPhone and iPad simulators

That was not possible last time I checked (API limitation). I'll check again to see if newer SDK allows this now and update this bug report.

> There should also be a way to specify the OS version of the simulator.

The `sdk` option works on the simulator as long as the specified version of the SDK is available (installed) on your system.

e.g. mtouch -sdk=5.0

If you have several Xcode versions installed on your system you might need to use "--sdkroot=PATH" to select the one you want to be used (in case the iOS version you want is only available in one of them).
Comment 2 Sebastien Pouliot 2012-07-16 09:51:32 UTC
Retina is not a 'family' we can set with the existing simulator API, i.e. the only valid value are 0 (use latest), 1 (iPhone) and 2 (iPad). That's also a limitation of the latest Xcode versions I've tested.

AFAICT 'retina' appears to be a configuration option kept by the simulator itself. E.g.

a. run app under iOS simulator (iPhone) - it will be a "normal" (non retina) iPhone
b. switch device to iPhone Retina
c. close the iOS simulator
d. run app again under iOS simulator (iPhone) - it will be a retina iPhone (and --stdout and --stderr should work fine)

We might be able to "push" that before starting the simulator but it likely won't work 100% of the time, e.g. when the simulator process is already running (and reused).
Comment 3 adam.lickel 2012-07-16 13:12:14 UTC
--device=0 is good enough for me.
And, thanks for the note on --sdk. I assumed that only applied to compilation.
Comment 4 Sebastien Pouliot 2012-07-17 10:07:08 UTC
for the record (when I google back on this subject ;-) the values are identical to UIDeviceFamily [1] and that does not include retina devices as separate families.

[1] http://developer.apple.com/library/ios/#documentation/general/Reference/InfoPlistKeyReference/Articles/iPhoneOSKeys.html#//apple_ref/doc/uid/TP40009252-SW11
Comment 5 Sebastien Pouliot 2013-02-14 13:14:38 UTC
Future (post 6.2) version of mtouch will allow specify more options to --device. OTOH those new options are configuration-based (no part of the API) and requires to restarts the simulator (about 10 extra seconds) so "1" or "2" is still better in most cases.

e.g. [iphone|ipad][,retina][,tall]